Lamp



Oct. 6, 1936. R. A. BORELI? L'AMP Filed Sept. 4, 1955 EEWENTOR QQQLWMQ B4% m'rommv Patented Oct. 6, 1936 Mrs!) STATES ATENT caries 3 Claims.

This invention relates to the construction of electric lamps andparticularly to means for connecting the lamp to a socket.

It is. an object of the invention to provide a connector for lamps bymeans of which the latter may be quickly inserted in, or removed from, asocket.

Another object of the invention is to provide a connector for lampswhich will audibly indicate, during insertion of the lamp into thesocket, when the correct connection is obtained.

Still another object of the invention is to provide a lamp in whichshort circuiting of the leads where they pass outwardly from the stem,due to loosening of the base from the lamp envelope,

cannot occur.

The invention possesses other objects and features of advantage, some ofwhich together with the foregoing, will be specifically set forth in thedetailed description of the invention which follows. It is to beunderstood however, that the invention is not to be limited to theparticular embodiment thereof shown and described herein as variousother forms thereof may be employed within the scope of the appendedclaims.

Referring to the drawing:

Figure l is a front elevation, partly in section, of the lamp and thelamp base of this invention mounted in a conventional lamp socket.

Figure 2 is a view similar to Figure 1 showing the lamp removed from thesocket.

Figure 3 is a plan View looking into the lamp base in the directionindicated by the arrow 3 of Figure 2.

Figure 4 is a perspective view of the lamp base.

Figure 5 is a perspective view of the seal end of the lamp.

In detail Figure 1 shows a conventional keytype socket 6 provided withthe usual threaded, current carrying, sleeve 1 and the resilient con- 0tact 8.

Adapted to be screwed into the sleeve 1 is an adapter lamp base 9provided with threads [0, which engage those of the sleeve, and with aninsulating bushing l I which carries a headed con- 45 tact pin I2attached to which, in the interior of the base, is a resilient contactl3. Sweated into the base is a metallic ring I4 provided with a centralaperture l5 and a transverse slot [6 passing therethrough and the ringis provided with a 50 peripheral groove I! in which is disposed atempered wire ring i8 whose portions l9 are straight and are disposedtransversely of the slot l6 adjacent either end thereof.

The constricted end 20 of the lamp 2| is pro- 55 vided with a metalbridge 22 having wings 23 (Cl.v 176-32) formed at each end thereof whichare bent to conform with the flare; of the seal- 24 where the stem 25.-joins the envelope and the wings are securedto the envelope by awrapping of cord 26. The upper edge 2l' of the bridge is curved andwhere it joins the wings 23, is provided with notches 28. One of theleads 29, of the lamp, is brought out through an insulating bushing 30,secured in an aperture bored centrally of the bridge, and is providedwith a terminal 3|. The other lead 29 is run outwardly through anaperture 32 in the bridge and is soldered directly to the surface of thelatter at the point 33.

Assembly of the parts is accomplished in the following manner. As isshown in Figure l, the end of the lamp carrying the bridge 22 isinserted in the open end of the base 9 so that the bridge will passthrough the slot l 6. Pressure is now exerted axially of both the lampand the base to press them together whereupon the curved upper edge ofthe bridge will cause the portions IQ of the wire ring E8 to moveoutwardly until they snap into the notches 28. The lamp and base are nowsecurely attached together. The assembled parts may now be screwed intothe socket 6 in the usual manner. One current path, as may be clearlyseen in Figure l, is through the sleeve 1, the base 9, the wire ring N3,the bridge 22 and the lead 29, and the other current path is through thecontact 8, the contact pin i2, the contact I3, the terminal 3| and thelead 29.

Once the base 9 has been inserted in the socket, it is not necessary tounscrew it therefrom when it is desired to remove the lamp. The removalof the lamp may be accomplished, as is shown in Figure 2, by pullingdownwardly thereon whereupon the portions IQ of the wire ring will beforced outwardly sufficiently to release their grip in the notches 28,thereby freeing the bridge and allowing withdrawal thereof from thebase.

In inserting the lamp in the base it is evident that when the portionsIQ of the ring snap into the notches 28, a loud click will be heard, andthat this will indicate that correct connection of the lamp and base hasbeen obtained.

It will be seen that the construction of the lamp, particularly that atthe terminals of the leads 29, precludes the possibility of the leadstwisting and short circuiting, thereby allowing the lamp to produce amaximum of useful service.

It will also be seen that due to the simplicity with which lampsembodying the invention may be connected and removed from sockets, theannoyance and waste of time attendant upon inserting the conventionallamp into a socket, particularly in a dark room is obviated.

What is claimed is:

1. The combination of an adapter lamp base to be screwed into a lampsocket, said lamp base having a resilient ring therein provided withparallel spaced portions, a lamp having a metallic member secured to theend thereof, said member having spaced notches therein complemental withand engageable with the spaced portions of said ring, and means on saidmember for guiding said ring portions into said notches when said lampbase and said lamp member are brought together.

2. The combination of an adapter lamp base to be screwed into a lampsocket, said lamp base having a resilient ring therein provided withparallel spaced portions, a lamp having a metallic member secured to theend thereof, said member having spaced notches therein complemental withand engageable with the spaced portions of said ring, and said memberhaving opposed sloping surfaces thereon communicating with said notchesfor guiding said ring portions into said notches when said lamp base andsaid lamp member are brought together.

3. The combination of a tubular, threaded, adapter lamp base to bescrewed into a lamp socket, an annular member secured in said lamp baseprovided with a diametrically disposed slot and a peripheral grooveopening into said slot, a resilient ring disposed in said groove, saidresilient ring being provided with spaced parallel portions crossingsaid slot at the respective ends thereof, a lamp having a metallicmember secured to the end thereof, said member having spaced notchestherein complemental and engageable with the spaced parallel portions ofsaid resilient ring and opposed sloping surfaces thereon communicatingwith said notches for guiding the spaced parallel portions of saidresilient ring into said notches when said lamp base and said lampmember are brought together, and said lamp member entering the slot ofsaid annular 20 member of the lamp base when the lamp and base arebrought together to prevent relative rotation between the lamp and base.

RALEIGH A. BORELL.

